Improvement in spoke-tenoning- machine



au, 7W i M /f/e/ftof. Af MM@ N4 I ETERS. PHoTn LTHOGRAPHER diluted lterer,

geen een.

FREDERICK H. BRINKKOTTER,

or CALLAHANS RANCH, GALI- roRNIA. y

V Letters .Patent No. 94,468, 'dated September 7, 1869,.

To allI whom tt-may con-cern .r

, Be it known that I, FREDERICK H. BRNKKO'TTER, of Gallahans Ranch, county ot' Siskiyou, State of Galifornia,have invented an Improved -Machine for Boring Tenons on Spokes; and I do hereby declare the following description and accompanying drawings are sudicient to enable any person skilled in the art or science to which it most nearly appertains, to make and use my said inventionor improvement without further invention or experiment.

'My invention relates to a new and improved apparatus for turning tenons on the outer end of spokes used in wagon-wheels, so that they may be fitted into the felloe.

In constructing wagon-wheels, one of the chief di'- culties is to bore the tenon on the end of the spoke perfectly true and straight, as. otherwise the tenon will work in the mortise and become loose, and soon causethe wheel to give, and become worthless.

My machine consists ofia frame, arranged so that the spoke to bebored is-placed invv position and firmly secured by clamps. The hollow auger is then set in' motion, and advanced by means of a screw on the shaft by which" it is propelled, until a tenonof the desired depth is turned.

In order to better illustrate my invention, reference is had to the accompanying drawings, forming a part of this specification, of which- AFigure l is a front View;

Figure 2 -is a side view;

Figure 3 is an end view.

Similar letters of reference in each oi" the figures indicate like parts.

A A are the two vparallel sides of the frame, and B C the two ends..

The end B is divided into two parts, the lower part being movable, and held in place by bolts passing throughthe upper portion B, and secured by nuts, a. Each of these end pieces'is provided with'a semicircnlar opening, which, when the blocks are drawn together, by the bolts et', form an opening through which the spoke G' passes, and is bound by forcing the lower blocks up against the block B.

Inside ofthe end pieces B are cross-pieces, b, extending from side to side of the frame above and below,

held together by means of bolts e.

Between the two cross-pieces are two sliding blocks, through which the bolts e pass.

These blocks are also provided with. semicircular openings, through which the spoke passes, and is bound or held by'theblocks being forced together by setscrews, e e, the blocks moving in ways in the sides of the frame.

These devices secure the spoke in the desired position for boring the tenon and in order that it may be boredperfectly true, a bar of met-al, D, bent so as to bear upon three of the spokes, and passing through slots, f f, in the sides of the frame, is employed.

This bar is placed so that its centre rests upon the spoke to be bored, its ends resting upon the spokes on each side of it and outside the frame, and is pressed down upon themby means of screws gg, thus throwing vthe three spokes in the same line with reference to the hub.

The wheel is securedl to the frame by a ring, E, which passes down over the' upper part of the hub, resting upon the spokes.

At intervals, around the inner circle of this ring, are cut inclined slots, in which small wedges, h 1:-,- are placed.

A block, F, is secured to the end of the hub by a. bolt, a, which passes through it, and is secured by a nuten the upper end; and screws, t' fi, passthrough this block and are turned down upon these wedges, thus forcing them between the hubandring, and-bind.- ing'the two firmly together.

A screw, k, having aat head, fastens into the xed head-piece B, the head resting upon the ring E; and a pin, -l, passes-through a hole in the dat head of the screw, intoholes min the ring opposite each spoke, as the wheel is tuf'ned. This secures the wheel tothe frame, so that each spoke will be tenoned exactly alike, as every portion is bound firmly in its proper place.

The hollow auger G, which makes the tenon, is sccured at the end of a shaft, I, by a set-screw, o, so

that it can be removed', if desired, for the purpose of replacing it with a dierent size.

The shaft passes through the end block K of the frame, and also through the slide-block L, -and lies parallel to the two sides.l of the frame.

The end block Kis arranged with two axles, p p, one at each end, which pass through vertical slots, t', in the sides of the frame A and A, and are secured in a hole in the plates s, the ends of which are formed Vinto screws, and pass through the projecting ends of cross-pieces J, and are secured at each end by nuts s',-

By loosening the screws, the end block' can be raised or lowered, and the nuts tightened accordingly, for giving any .desired angle or pitch to the shaft and au er.

he slide-block L moves back and fort-h between the sides, in slots t t, and the shaft is provided with a screw-thread where it passes through.

A clamp, which consists of the two parts fu. u, pivoted vtogether at the lower part of the blockL, is arranged to clasp the shaft when they are drawn together above where they are held'by a staple, lr, or equivalent deviee, which prevents them from separating.

' dulling the auger.

A spring, w, is coiled around the'shaft, between the end block K and slide-block L, which urges the slide- 4block forward, so as to maintain a yielding pressure where it passes between the clamp, then feeds the anger until the desired depth of tenon is turned-1 The shaft is then stopped and the clamps released, after which the shaft is pushed back` to place, and another spoke can' be put in position for boring.

By the use oi" ths'device tenons-.may be quickly bored on the ends of wagon-spokes with the greatest precision, every tenen on thewheel being made on the same line lwith reference to the hub,which is one of. the most essential points in constructing-a solid and desirable wheel.

'Having thus described my invention;

What .I claim, and vdesire to secure by Letters Patent, is'- 1. The arrangement, between the sides A, of the spokes, and withset-screws e and bolts a, to operate .them,'substantially as described.

A 2. In combiuationwith the above-claimed device, the bar D, operated by the screws g, substantially as and for the purpose specified.

3. The combination and arrangement of the ring-E, block F, wedges h, and' screws i, substantially as and -for the purpose set forth.

4. The arrangement of the block K, providedwith axles p, bearing in the screw-plates s," and traversing in the slots z, substantially as and for the purpose set forth. i

'5. The combination and arrangement of the sliding block L, clamps u, andspring w, substantially as and for the purposes described.

6. The cap P, attached to the end of the spoke to guide the auger, substantially as described.

In witness whereof', I have hereunto set my hand and seal. Y Y FREDER-lCK H. BRINKKOTTER. [L. s]

Witnesses:

E. H. HALL, 'H. K. LHALL.

blocks B .Band d, provided with spaces to receive the 

